AutoCodes – GMC – B0958 GMC

B0958 GMC Code - Parking Assist Rear Sensor Left Corner Circuit

Quick Answer

The parking assist sensors are 3-wire ultrasonic sensors that are used to determine the distance between the vehicle and an object. Common causes include Faulty Parking Assist Rear Sensor Left Corner, Parking Assist Rear Sensor Left Corner harness is open or shorted, Parking Assist Rear Sensor Left Corner circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B0958 GMC indicates Parking Assist Rear Sensor Left Corner Circuit.
Common causes: Common causes include Faulty Parking Assist Rear Sensor Left Corner, Parking Assist Rear Sensor Left Corner harness is open or shorted, Parking Assist Rear Sensor Left Corner circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 5,366

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 02, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B0958 GMC Description

The parking assist sensors are 3-wire ultrasonic sensors that are used to determine the distance between the vehicle and an object. The Parking Assist Control Module supplies 12 V to the parking assist sensors via the 12 V reference circuit and provides ground via the low reference circuit. The Parking Assist Control Module triggers the sensors in a sequential loop. After each sensor transmits, the Parking Assist Control Module uses the sensor echo received through the signal circuit to calculate the distance and position of an object. The Diagnostic Trouble Code (DTC) will be set when the Parking Aid Rear Sensor signal to the Parking Assist Control Module is out of specification.

OBDII Code B0958 GMC - Parking Assist Rear Sensor Left Corner Circuit - AutoCodes.com — B0958 GMC Code - Parking Assist Rear Sensor Left Corner Circuit

What does this mean?

What are the Possible Causes of the DTC B0958 GMC?

Faulty Parking Assist Rear Sensor Left Corner
Parking Assist Rear Sensor Left Corner harness is open or shorted
Parking Assist Rear Sensor Left Corner circuit poor electrical connection
Faulty Parking Assist Control Module

How to Fix the DTC B0958 GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

B0958:01 Parking Assist Rear Sensor Left Corner Circuit Short to Battery
B0958:02 Parking Assist Rear Sensor Left Corner Circuit Short to Ground
B0958:04 Parking Assist Rear Sensor Left Corner Circuit Open
B0958:06 Parking Assist Rear Sensor Left Corner Circuit Low Voltage/Open
B0958:08 Parking Assist Rear Sensor Left Corner Circuit Performance - Signal Invalid
B0958:18 Parking Assist Rear Sensor Left Corner Circuit Low Signal Amplitude
B0958:21 Parking Assist Rear Sensor Left Corner Circuit Incorrect Period
B0958:22 Parking Assist Rear Sensor Left Corner Circuit Too Short Low-Time
B0958:3A Parking Assist Rear Sensor Left Corner Circuit Incorrect Component Installed
B0958:3B Parking Assist Rear Sensor Left Corner Circuit Self-Test Malfunction

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0958 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Information for Specific GMC Models

B0958 2014 GMC Sierra — Parking Assist Rear Sensor Left Corner Circuit
B0958 2015 GMC Sierra — Parking Assist Rear Sensor Left Corner Circuit
B0958 2016 GMC Sierra — Parking Assist Rear Sensor Left Corner Circuit
B0958 2017 GMC Sierra — Parking Assist Rear Sensor Left Corner Circuit
B0958 2018 GMC Sierra — Parking Assist Rear Sensor Left Corner Circuit

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B0958 GMC Code

1. What are the common symptoms of OBDII code B0958 GMC?

The common symptoms of code B0958 GMC include a malfunctioning rear parking assist system, warning lights on the dashboard, and audible alerts not working properly.

2. What causes OBDII code B0958 GMC to trigger?

Code B0958 GMC is typically triggered when there is a malfunction in the left corner circuit of the rear parking assist sensor. This could be due to sensor damage, wiring issues, or a faulty control module.

3. How can I diagnose the issue related to OBDII code B0958 GMC?

Diagnosing code B0958 GMC involves inspecting the left rear corner parking assist sensor, checking the wiring for any damage or loose connections, and using a diagnostic scan tool to read the trouble codes stored in the vehicle's computer.

4. Can I still drive my vehicle with OBDII code B0958 GMC?

While it is technically possible to drive with code B0958 GMC, it is not recommended as the rear parking assist system may not function properly, increasing the risk of accidents while parking.

5. How can I repair OBDII code B0958 GMC?

Repairing code B0958 GMC involves replacing the faulty left corner rear parking assist sensor, repairing any damaged wiring, or replacing the control module if necessary. It is recommended to seek professional help for accurate diagnosis and repair.

6. Can I reset OBDII code B0958 GMC on my own?

Resetting code B0958 GMC can be done with an OBDII scanner by clearing the trouble codes stored in the vehicle's computer. However, it is important to address the underlying issue causing the code to prevent it from reoccurring.

7. Are there any DIY tips for troubleshooting OBDII code B0958 GMC?

Some DIY tips for troubleshooting code B0958 GMC include visually inspecting the rear parking assist sensors, checking the wiring for any visible damage, and ensuring the sensors are clean and free of obstructions.

8. Is OBDII code B0958 GMC a serious issue?

While code B0958 GMC may not directly affect the drivability of the vehicle, it is still considered a serious issue as it impacts the safety features of the rear parking assist system, which is designed to prevent accidents while parking.

9. How much does it cost to repair OBDII code B0958 GMC?

The cost to repair code B0958 GMC can vary depending on the extent of the damage, the parts required for replacement, and labor charges. It is advisable to obtain quotes from different auto repair shops for an accurate estimate.

10. Can extreme weather conditions affect OBDII code B0958 GMC?

Extreme weather conditions such as heavy rain, snow, or extreme temperatures can potentially damage the rear parking assist sensors or wiring, leading to the triggering of code B0958 GMC. Regular maintenance and inspections can help prevent weather-related issues.